{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-47843 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-47843 is a low-severity server-side request forgery vulnerability in Spring Reactor Netty, published on 26 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-47843 and fix it if it is affected.\n\nWhat it is: CVE-2026-47843 is a low-severity server-side request forgery vulnerability in Spring Reactor Netty, published on 26 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-47843 in the wild and no public exploit code.\n\nAffected product: Spring Reactor Netty. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-47843/ (Markdown: https://insights.sbomify.com/CVE-2026-47843/index.md)","id":"CVE-2026-47843","markdown":"https://insights.sbomify.com/CVE-2026-47843/index.md","name":"CVE-2026-47843","record":{"aliases":["CLEANSTART-2026-CL63424","CLEANSTART-2026-FI75370","CLEANSTART-2026-GW15046","CLEANSTART-2026-IJ88105","CLEANSTART-2026-UA66852","GHSA-7f23-wcwg-2f8r"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_read","security_bypass"],"network_reachable":"yes","non_default_config":true,"product_category":"Java networking library","requires_auth":"none","summary":"Reactor Netty may reuse DNS resolvers across clients, potentially allowing traffic routing to unintended hosts in multi-client scenarios.","user_interaction":"not_required","vuln_class":"ssrf"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"vmware","cpe":[{"product":"reactor_netty","vendor":"broadcom"}],"cvss":{"score":3.7,"severity":"low","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N","version":"3.1"},"cwes":[],"description":"In specific scenarios involving multiple clients with different DNS resolver configurations, Reactor Netty may incorrectly reuse a previously configured DNS resolver.\nReactor Netty 1.3.0 - 1.3.6\nReactor Netty 1.1.0 - 1.2.18\nReactor Netty 1.0.52 and earlier","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Reactor Netty may incorrectly route traffic due to DNS resolver reuse","id":"CVE-2026-47843","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"ssrf","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Reactor Netty HTTP Server Leaks Exception Details","id":"CVE-2026-47844"},"packages":[],"prev":{"headline":"Deterministic AES/CBC Encryption in Spring Security AesBytesEncryptor Allows Ciphertext Correlation","id":"CVE-2026-47842"},"products":["Reactor Netty"],"published":"2026-08-26","related":[{"cvss_score":7.5,"headline":"In Reactor Netty HTTP Server a malicious user can send a request using a specially crafted URL that can lead to a directory traversal attack","id":"CVE-2023-34062","kev_date_added":null,"published":"2023-11-15"},{"cvss_score":6.8,"headline":"Reactor Netty authentication leak in redirects","id":"CVE-2019-11284","kev_date_added":null,"published":"2019-10-17"},{"cvss_score":6.5,"headline":"DoS Via Malformed URL with Reactor Netty HTTP Server","id":"CVE-2020-5403","kev_date_added":null,"published":"2020-03-03"},{"cvss_score":6.5,"headline":"Authentication Leak On Redirect With Reactor Netty HttpClient","id":"CVE-2020-5404","kev_date_added":null,"published":"2020-03-03"},{"cvss_score":6.1,"headline":"Reactor Netty WebSocket Client Leaks Credentials On Redirect","id":"CVE-2026-47848","kev_date_added":null,"published":"2026-08-26"},{"cvss_score":5.3,"headline":"Reactor Netty HTTP Server Leaks Exception Details","id":"CVE-2026-47844","kev_date_added":null,"published":"2026-08-26"},{"cvss_score":5.3,"headline":"Reactor Netty HTTP Server may incorrectly evaluate proxy addresses","id":"CVE-2026-47845","kev_date_added":null,"published":"2026-08-26"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-08-26","vendors":["Spring"]},"summary":"Reactor Netty may reuse DNS resolvers across clients, potentially allowing traffic routing to unintended hosts in multi-client scenarios.","url":"https://insights.sbomify.com/CVE-2026-47843/"}